heap/HeapTimer.cpp

   1 /*
   2  * Copyright (C) 2012 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "HeapTimer.h"
  28
  29 #include "IncrementalSweeper.h"
  30 #include "JSObject.h"
  31 #include "JSString.h"
  32 #include "JSCInlines.h"
  33 #include <wtf/MainThread.h>
  34 #include <wtf/Threading.h>
  35
  36 #if PLATFORM(EFL)
  37 #include <Ecore.h>
  38 #endif
  39
  40 namespace JSC {
  41
  42 #if USE(CF)
  43
  44 const CFTimeInterval HeapTimer::s_decade = 60 * 60 * 24 * 365 * 10;
  45
  46 static const void* retainAPILock(const void* info)
  47 {
  48     static_cast<JSLock*>(const_cast<void*>(info))->ref();
  49     return info;
  50 }
  51
  52 static void releaseAPILock(const void* info)
  53 {
  54     static_cast<JSLock*>(const_cast<void*>(info))->deref();
  55 }
  56
  57 HeapTimer::HeapTimer(VM* vm, CFRunLoopRef runLoop)
  58     : m_vm(vm)
  59     , m_runLoop(runLoop)
  60 {
  61     memset(&m_context, 0, sizeof(CFRunLoopTimerContext));
  62     m_context.info = &vm->apiLock();
  63     m_context.retain = retainAPILock;
  64     m_context.release = releaseAPILock;
  65     m_timer = adoptCF(CFRunLoopTimerCreate(0, s_decade, s_decade, 0, 0, HeapTimer::timerDidFire, &m_context));
  66     CFRunLoopAddTimer(m_runLoop.get(), m_timer.get(), kCFRunLoopCommonModes);
  67 }
  68
  69 HeapTimer::~HeapTimer()
  70 {
  71     CFRunLoopRemoveTimer(m_runLoop.get(), m_timer.get(), kCFRunLoopCommonModes);
  72     CFRunLoopTimerInvalidate(m_timer.get());
  73 }
  74
  75 void HeapTimer::timerDidFire(CFRunLoopTimerRef timer, void* context)
  76 {
  77     JSLock* apiLock = static_cast<JSLock*>(context);
  78     apiLock->lock();
  79
  80     VM* vm = apiLock->vm();
  81     // The VM has been destroyed, so we should just give up.
  82     if (!vm) {
  83         apiLock->unlock();
  84         return;
  85     }
  86
  87     HeapTimer* heapTimer = 0;
  88     if (vm->heap.fullActivityCallback() && vm->heap.fullActivityCallback()->m_timer.get() == timer)
  89         heapTimer = vm->heap.fullActivityCallback();
  90     else if (vm->heap.edenActivityCallback() && vm->heap.edenActivityCallback()->m_timer.get() == timer)
  91         heapTimer = vm->heap.edenActivityCallback();
  92     else if (vm->heap.sweeper()->m_timer.get() == timer)
  93         heapTimer = vm->heap.sweeper();
  94     else
  95         RELEASE_ASSERT_NOT_REACHED();
  96
  97     {
  98         JSLockHolder locker(vm);
  99         heapTimer->doWork();
 100     }
 101
 102     apiLock->unlock();
 103 }
 104
 105 #elif PLATFORM(EFL)
 106
 107 HeapTimer::HeapTimer(VM* vm)
 108     : m_vm(vm)
 109     , m_timer(0)
 110 {
 111 }
 112
 113 HeapTimer::~HeapTimer()
 114 {
 115     stop();
 116 }
 117
 118 Ecore_Timer* HeapTimer::add(double delay, void* agent)
 119 {
 120     return ecore_timer_add(delay, reinterpret_cast<Ecore_Task_Cb>(timerEvent), agent);
 121 }
 122
 123 void HeapTimer::stop()
 124 {
 125     if (!m_timer)
 126         return;
 127
 128     ecore_timer_del(m_timer);
 129     m_timer = 0;
 130 }
 131
 132 bool HeapTimer::timerEvent(void* info)
 133 {
 134     HeapTimer* agent = static_cast<HeapTimer*>(info);
 135
 136     JSLockHolder locker(agent->m_vm);
 137     agent->doWork();
 138     agent->m_timer = 0;
 139
 140     return ECORE_CALLBACK_CANCEL;
 141 }
 142 #else
 143 HeapTimer::HeapTimer(VM* vm)
 144     : m_vm(vm)
 145 {
 146 }
 147
 148 HeapTimer::~HeapTimer()
 149 {
 150 }
 151
 152 void HeapTimer::invalidate()
 153 {
 154 }
 155
 156 #endif
 157
 158
 159 } // namespace JSC